Made a BW using
The mathematically correct “Decompose/Bucket Fill the A and B channels/Recompose” method for GIMP 2.9
https://ninedegreesbelow.com/photography/lab-lightness-to-black-and-white-gimp29-photoshop.html#decompose-bucket-fill
First, I changed the color calibration again on the above image:
DSC00138_13.arw.xmp (108.0 KB)
Then I switched to GIMP and used the above BW method:
